Machine for pulling tacks from lasted shoes.



B. N. CLARY.

MACHINE FOR PULLING TAGKS FROM LASTED SHOES.

APPLICATION FILED JULY 23, 1910.

Patented Apr. 22, 1913.

UNITED sTATEs PATENT OFFICE.

BURTON N. CLAR Y; E1 BEVERLY, MASSACHUSETT$, ASSIGNOR TO UNITEDl SHOE? MACHINERY COMPANY,OFIIPATERSON, NEW J ERSEY, A CORPORATION OF NEW JERSEY.

MACHINE. FOR PULLING TACKS FRQMi LASTEIDSHOES.

Specification orteuersratene PatentedApr.22,11913n Application filed July 23, .1910. Serial No. 573,377.

. Beverly, in: the county of Essex and State of Massachusettahave invented certain new and useful Improvements 1n ,Machines for Pulling Tacks from .LastedjShoes; and I do hereby declare the followingto be azfull,

clear, and exact description of the invention, such as will enable others skilled; in the art to which it appertains. to makeand use the same.

The invention relatesto machines .for pulling tacks from lasted shoes, andjmore particularly .to that class of tack pulling machines in which the tacksare acted upon and extracted by a rotary tool bearing a transverse tack engagingblade.

The object of the invention is to provide a tack pulling tool of this character with a tack puller, the tack engaging edge of which the tack pulling fool is supported upon; a rotating; spindle or shaft 1. this shaft" is provided withtwo concentric may be readily: removed for. repair and sharpening, and in the provision of means whereby the tackengagingedge may grad ually be adjusted to project just the requisite distance beyond theperipheral. edges of the guard flanges as the tack engaging. edge is ground away by repeated sharpening A further object of the invention is to providea tack puller which may be cheap to manufacture, and also from: which the leather cuttings may be readily discharged or dislodged thuspreventing the tool from becoming clog ed.

To these 611C s the invention contemplates the use of a rotating shaft or spindle upon which are mounted tworotatably adjustable guard flanges the peripheral. edges of which 1 are at one point somewhat ground away or flattened. Between the guard flanges is mounted the tack pullingblade, said blade being radially adjustable insrelation to the shaft to provide a gross adjustment, a finer adjustment being attained ibyvturning the flattened portion of the guard flangeswith relation to the tack engaging edge. The preferred form of radial adjustment of the tacklengaging edge with relation to its shaft is by mounting the tack pullin blade upon an eccentric portion of theshaft or spindle, but in accordance with the broader features of the inventionany suitable form of radial adjustmentof the tack pnllingblade may be employed. The tack pulling blade isformed of a Usshaped piece of metal the transverse part of which forms the tack engaging edge.

This form of tack pulling blade may be stamped and. bent up from. sheet metal thus but little expense in replacing this part when worn out. The U-shape is particularly advantageous since it leaves a hollow por tion inside the tack engaging edge through which the leather cuttiri'gs are pushed and discharged from the tool.

The various features of the invention will being cheap to manufacture and entailing be readily understood from an mspection of the accompanying drawings in which Figure 1 is a front elevation of .thetack pulling bladeembodying the invention Fig. 2 i

is a sectional elevation on the line 2-.-2,.Fig.

.1; Fig; 3 is a sectional elevation on line 33, Fig. 2;. Fig. 4 is a front elevation and A Fig. 5 is a side elevation of the tack pulling blade.

In the construction shown in the d 'awings The end of bearing. surfaces 2 and Bupon which are mounted the respective guard flanges 4 and. 5, which guard flanges areground away somewhat at :parts 17 of their peripheries. The bearing 2 is of greater diameter than bearing18 so that the guard flange 4 may be freely slipped over the eccentric portion (3 upon which is mounted the tack pulling blade 7. The tack .pullingblade 7 is of a U-shapeand may be stamped from sheet metal. The transverse or brid e portion; 8 of the U-shaped tack pulling blade has the tack engaging cdge 9 which is sluirpened to cut into the leather and engage under the heads of the insole tacks of a shoe and so extract them. .llack of the tack engaging edge 9 the transverse portion is eccentric being curveduinwardly from the engaging edge to allow the necessary projection of the edge beyond the other parts to out under the embedded headsof the tacks. The engagin edge may be straight or it inay be provided with a notch 10 as shown in Fig. 32. The fork portions 11 of :the pulling blade are formed with polygonal perforations 12 which fit over the eccentric portion 6 of the shaft whichdias the cross-section of a corresponding polygon. Betweenthe forks 11 of 1 the .U-shapcd tack puller is placeda washer 13 to space the forks apart when they are clamped inplace. The guard flanges 4 and 5and the tack pulling blade 7 with .its

'washer 13 are held on the end of the spindle by means of the screw 14 which clamps the aforesaid parts between its bearing washer 15 and the flange 16 of the shaft. The edge of the tack pulling blade is in practice ground back by repeated sharpening and it is evident that means must be'provided whereby this wearing away maybe compensated by advancing the engaging.

edge. to its proper distance beyondthe guard flanges.

, trio 6 it may be placed in a definite "number of positions which will give adjustments of the engaging edge'radially to the axis of the spindle giving a rough adjustment. A secondor fine adjustment is then made by means of the flattened portions 1710f the guardflangeS 4 and 5. These flattened portions 17 will, by being turned toward the engaging edge 9, allow the edge 9 to project the desired distance beyond the bearing.

edges of the flanges and so make a gradual I adjustment of the distance which it may be tage in the use of the U shaped tack pulling,

desirable to have the edge out into the leather in extracting the tacks.

It will be noted that an important advanblade is that it prevents clogging of the tool by the leather cuttings or other matter. The space-beneath the transverse or bridge portion and between the forks of the U allows the leather cuttings to pass freely through and to be discharged from the tack pulling tool;

Having explained the nature and object of the invention and specifically described a form of the tack pulling tool in which itmay be embodied, what is claimed is 1. A rotary tackspulling tool, having, in combination, a spindle, a tack pulling blade having a transverse edge mounted on the pulling blade.

Copies of this patent may be obtained for spindle, and a guard flange having a portion of its periphery somewhat flattened mounted on the spindle at one side of the 2. A rotary'tack pulling tool, having, in combination, a tackpulling blade provided with a transverse tack pulling edge, a guard flange at one sideo-f the pulling blade, said guard flange being ,7 somewhat flattened at one portion of its periphery, and means for rotat'ably adjusting said guard flange in relation to the tack pulling'edge.

3. Arotary tack pulling tool, having, in combination, a tack pulling blade provided with a transverse tack engaging edge, means This is accomplished by two ad-' justments, a gross adjustment and a fine adjustment. 'It is readily seen that when the tack pulling blade 7 is put. upon its polygonal eccenfor varying the position of thetack' engagr ing edge radially, a guard flange at one side of the tack pullingjblade, said'guard flange being somewhat flattened at one portion of its periphery, and means forrotatably adjusting the guard flangeyin relation to the tack pulling edge.

1. A rotary tack pulling 1tool having, in" v combination, a spindle and substantially U; shaped tack pulling blade havingits trans:

verse portion, forminga tack engaging .edge

and having itslegs extending inwardtrom said'transverse portionand mounted on the spindle, substantially as 1 described.

a spindle adapted to be rotated, and aUT shaped tack pulling ;tool -mounted on the I 5. A rotary tack pullingfytool comprising spindle, the transverse .portion' of the U,

forming a tack engaging edge and the legs of the U extending from the transverse portion toward the spindles 8. A rotary tack pulling tool, having, in

combination, a spindle, a tack pulling blade havlng a transverse, edge mounted on the.

spindle, a guard flange atone side of the pulling blade, said guard flange beingsome' what flattened at one portion of its periph= cry, and means providing a relativerotata ble adjustment between the pulling blade and the guard flange. I

v 9. A rotary tack pulling tool; having, in

combination, a spindle adapted to be ro-- 'tated, a substantially U-shaped tack pulling blade havlng its legs extending at, substantiallyright angles to-the axis of the spindle and having openings in the legs through which the spindle isreoeived, substantially v as described.

10. A'rotary tack pullingtool, having, in

combination, a spindle adapted to be rotated, a U-shaped tack pulling blade mounted. on. the spindle, the transverse portion of the U forming a tack engagingsedge, and the legs of the Uextending from the transverse portion toward the spindle and .a guard flange mountedon the spindle at one side of the tack pulling blade.

BURTON N. o ARY.

Witnesses Gnonon WV. GATES, CHESTER E; ROGERS.

five cents each, by addressing the Commissioner, of Patents; Washington, D. G. i 

